Specification, a detailed description of the design and materials used to make something.

Speculation, forming a theory or conjecture without firm evidence.

अनुमान

English Usage: There was much spec regarding the reasons for his sudden departure.

Hindi Usage: उसकी अचानक departure के कारणों के बारे में बहुत अनुमान थे।

To observe or examine something carefully.

To speculate or theorize about future events.

अनुमान करना

English Usage: The economists spec what the market will look like next year.

Hindi Usage: आर्थिक विशेषज्ञ अनुमान करते हैं कि बाजार अगले वर्ष कैसा होगा।